अंकों (0,1,2,3,4,5,6) से बिना पुनरावृत्ति (3) अंकों की कितनी संख्याएं बनेंगी?
How many (3)-digit numbers can be formed from (0,1,2,3,4,5,6) without repetition?
Explanation opens after your attempt
D. (180)
Concept
The hundreds place cannot be (0), so \(6\cdot6\cdot5=180\). In exams, always check the zero restriction on the first digit.
Why this answer is correct
The correct answer is D. (180). The hundreds place cannot be (0), so \(6\cdot6\cdot5=180\). In exams, always check the zero restriction on the first digit.
Exam Tip
सैकड़े के स्थान पर (0) नहीं आएगा, इसलिए \(6\cdot6\cdot5=180\)। परीक्षा में पहले अंक की शून्य-शर्त हमेशा जांचें।
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